CTRL + F and type "M_Y_PrisonBlack"
Replace the M_Y_PrisonBlack line to this | (Copy and Paste it to Peds.ide)
                                         v

M_Y_PrisonBlack, 	Null,	 		CIVMALE, 		move_gng@afro_a,	GESTURES@MALE,		GESTURES@M_PHONE,	FACIALS@M_LO,		visemes@m_lo,		0, 		move_gng@afro_a,		null,			2,9,		PED_TYPE_PLAYER,	VOICE_PLY_CR,  	VOICE_PLY_CR

-------------------

Then scroll to the very bottom, make a space between 
M_Y_Cop_Traffic and M_Y_Prisonguard.

On top of M_Y_Prisongaurd, Copy and Paste and put this between
M_Y_Cop_Traffic and M_Y_Prisonguard. |
                                     v

M_Y_PrisonBlack,		M_Y_PRISONBLACK,				0
M_Y_PrisonBlack,		M_Y_PRISONDLC,					1
M_Y_PrisonBlack,		M_Y_chopshop_02,				2

save the file and move to 6 - PedVariations Guide